Обсуждение: createlang pltclu

when we try to createlang pltclu <databasename> we get this error:
Error:  load of file /usr/lib/pgsql/pltcl.so failed:

/usr/lib/pgsql/pltcl.so: undefined symbol: tcl_createslave

we also addded /usr/lib/pgsql to the /etc/ld.so.conf



help please